 /*******************************************************************************
  * Copyright (c) 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.cheatsheets.handlers;

 import org.eclipse.core.commands.AbstractParameterValueConverter;
 import org.eclipse.core.commands.ParameterValueConversionException;

 /**
  * A command parameter value converter to convert between Integers and their
  * String representations for use in the open dialog commands.
  *
  * @since 3.2
  */
 public class DialogIntegerValueConverter extends
         AbstractParameterValueConverter {

     public Object convertToObject(String parameterValue)
             throws ParameterValueConversionException {

         try {
             int i = Integer.parseInt(parameterValue);
             return new Integer (i);
         } catch (NumberFormatException ex) {
             throw new ParameterValueConversionException(
                     "error converting to integer: " + parameterValue); //$NON-NLS-1$
 }
     }

     public String convertToString(Object parameterValue)
             throws ParameterValueConversionException {

         if (!(parameterValue instanceof Integer )) {
             throw new ParameterValueConversionException(
                     "value for conversion must be an Integer"); //$NON-NLS-1$
 }

         Integer i = (Integer ) parameterValue;
         return Integer.toString(i.intValue());
     }

 }

